Automatic gage-glass valve.



A. 1. HOCKMAN. AUTOMATIC GAGE GLASS VALVE.

APPLICATION FILED lAN.16\ \9l'8- w i m m M 6 5 w n M Z m mw z 7 v v 5 m a 6 Z n 7 Z 3 m 1 1 111] um A Patented Apr. 2 9, 1919.

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AUTOMATIC GAGE-GLASS VALVE.

p f c n of Letters Patent Patented Apr. 29, 1219..

' Application filed January 16,1918. Seria1No.212,069.

To all whom itmay concern: f

. Be it. known that I, ASHBYJ. Hocmran,

citizen of the United States, residing at Las Animas, in the county ofgBent, State of Colorado, have invented certain new and useful Improvements 'in Automatic Gage- GlassValveSyan'd I do hereby declare the following to be afull', clear, and exact description of the inventiomsuch as will enable othersskilledin the art to which it appertains. to make and fuse the same,

This invention is an improvement in gages for boilers and the like andhas particular reference to an automatic check valve therefor. 1

Heretofore, invalves of known, construction, wherein it is desired to check the pressure upon the breaking of. a gage. glass, the same have been subject 'to defects which render their use both undesirable and detrimental to the safety of the boiler. This has been mainly found due to the fact that springs, release pins'and other constructions have been employed to open valves and these constructions have oftentimes prevented an absolutely correct registration of pressure in the gage.

An object of the invention is to overcome the above objections by providing a valve wherein the checking of the flow of pressure will be positively accomplished upon breaking of the gage glass and wherein said glass may be effectively scavenged to remove the sediment which collects therein and revents accurate reading thereof.

Another object is to provide a valve construction of this character which is simple in construction, easy to manufacture and efiective in carrying out the purpose for which it is designed.

The inventive idea involved is capable of receiving a variety of mechanical expres sions one of which, for the purpose of illustrating the invention, is shown in the accompanying drawing, wherein -Figure 1 is a fragmentary side elevation of a boiler and gage glass therefor showing the invention applied.

Fig. 2 is a vertical longitudinal section.

Fig. 3 is a detail side elevation of a valve seat employed in connection with the invention.

Fig. 4c is a transverse sectional view thereof.

In the drawing, the numeral 5 indicates a shown) portion of a boiler or other fluid pressure sourcewith which is associated the gage glass 6 which may be of any desired construction and which has its upper end connected to theboiler in any preferred manner.

. The automatic valve construction which embodies the essential feature of this invention is associated with the lower end of the gage glass and preferably comprises a valve body or casing 7 having an extension 8 adapted to be connected to the boiler 5 and provided with a passage 9 which communicates, at its end remote from the boiler, with the right angularly disposed passage 10 inlongitudinal alinement with an extension 11 to which is adapted to be connected a globe valve, gate valve or cock valve (not which provides for draining the gage glass whenever desired.

The valve body 7 is preferably enlarged as indicated at 12 and provided in said en largement with the screw threads 13 which are engaged by an externally threaded ring member 11 which, when in position, is recessed within said enlargement and which is provided centrally thereof with an opening 15 in alinement with the gage glass 6 and having a valve seat 16 at its inner or lower end. The outer surface of the ring member 1% may be provided with recesses or sockets 17 to receive a suitable tool whereby the member may be removed or replaced. The lower end of the gage glass 6 rests upon the outer or upper surface of the ring member 14 and is surrounded by the packing 18 which also engages the outer face of said ring member and said packing is held in position by means of the packing gland 19 secured in place by the gland nut 20 which is internally threaded to engage the external threads 21 of the enlargement 12.

Directly below the point of communication of the passage 9 with the assage 10, the wall of the latter is screw t readed as indicated at 22 to receive the external threads of the valve seat 23. The upper portion of the seat 23 is referably formed by a plurality of upward y converging and spaced webs 2i forming ports 25 therebetween and said webs and ports give to the upper portion of said seat a general frustoconical appearance. The upper ends of the ports 25 terminate short of the adjacent ends of the webs 24 and the upper end of the seat prevented.

is preferably concaved as indicated vat26 and provided with an opening 27 which communicates With the'ports 25 andthelongitudinal passage 28"forn1ed 'inthe lower end of the seat 23. A ball valve-29 preferably employed in connection With the invention and is normally seated in the concalved upper end of the member 23 so as to permit of the free passage l-o'f pressure through the gage lass and extension 9. In order to out off t e pressure on the automatic valve, the extension 9 is prov'ided therein with a valve seat 30 adapted to be engaged by a valve 31 \vhieh may be of ainy desired construction and wx'fhich' has a stem 32 mounted in the bushing 33 so as tofioe adjustable into engagement with said seat 30. V In practice, as. previously stated, the ball valve 29 is in engagement with the upper end of the seat 23lbut should the -gageglass break, as often occurs, the pressure escaping through the break will immediately lift the valvej29 and cause the same toengage the seat 16 in the ring member 14; thus's-topp-i'ng the flow of pressure through the passage 15 and the lower portion of thegage glass remaining in the valvehody. This valve- 29 will remain seated until the" pressure is out off and it Will thus 'beapparent that danger from escaping steam or "other'fluid Will-b0 Should it be desired to scavenge the gageglass, the drain valve (nots'ho'wn) which is attached to the exten'sionll may be opened and the pressure will then be directed through the valve ,body in such a 'retainithe valve'ea seated in theupper efid "ofrhe member 23 and thus wperinit ofithe sediment and dirt in the gage tension 11.

=What is claimed-as An automatic valve structure for gage glasses comprisinga valve body adapted to be connected-=teaeaeead o f :gr'sige glass and havingan1eXtension iin alinement with the gage g lass and a f'second uextension vat augletheretoand adapted to be connected to a source of pressure, 5a member mountedin said valve body below :said second extension having *a longitudinal passage in arla'aaement with the first men tioned extension -ahd "also provided with spa ced Webs tfiorm-i "a. xiqyorts therein and i a valve mama-member: tted iu' the'afirst -riai-ncd ex=tei isioii a;nd having ai vaflveseat-vand ball valve normallymngagedwith the first-named valve seat. and adapted to engage the seat in sa iel seeond named member to 'r-eut -oif-the pressure through saidgage gg lass.

ln testimony whereoi 1 I a fiix my signa; ture; *in itlw presence of two Witnesses. V

' "Witnesses IVAN- G. GREEN,

L'awanncn MxPARxnR.

1 "1111i! P ay o tained lor'nyeficents .ea h;M nimum:-the"' commmlduerifitauenta, Washint'onj 20: 6." 

